Accession Number : ADD008505

Title :   Hybrid Velocity Derived Heading Reference System.

Descriptive Note : Patent Application,

Corporate Author : DEPARTMENT OF THE ARMY WASHINGTON DC

Personal Author(s) : Gray,Jack

Report Date : 23 Mar 1981

Pagination or Media Count : 18

Abstract : This invention relates to a device and method which can be used in any type of moveable vehicle, be it aircraft, land vehicle or marine vessel, to provide a dependable and accurate true heading reference. It provides an accurate and constantly updated readout of the vehicles present direction of travel relative to the earth's latitude and longitude coordinate system. The invention provides a novel and accurate true heading reference for vehicles which utilizes navigation satellite-derived velocities and other velocities derived from on-board equipment.

Descriptors :   *Patent applications, *Direction finding, *Hybrid systems, *Velocity, Navigational aids, Latitude, Longitude, Ground vehicles, Airborne, Ships, Navigation satellites, Doppler systems, Inertial systems, Integrated systems, Algorithms, Radio receivers, Global

Subject Categories : Unmanned Spacecraft
      Radio Communications

Distribution Statement : APPROVED FOR PUBLIC RELEASE